[英]why can't I read the logcat output in my program?
我進行了搜索,發現以下代碼將使我的程序在android中讀取logcat的輸出。但是,在我周期性地調用此函數之后,什么也沒有發生。除了“ logcat被調用”之外,沒有通過system.out輸出任何內容。真的不知道發生了什么,因為這里的許多帖子都說這會起作用:
public void Collector_logcat(){
String stringbuffer="";
String command="logcat -d";
String command_c="logcat -c";
System.out.println("logcat called\n");
try{
m_logcatprocess=Runtime.getRuntime().exec(command);
m_logcat_inputreader=new InputStreamReader(m_logcatprocess.getInputStream());
m_logcat_reader=new BufferedReader(m_logcat_inputreader);
while((stringbuffer=m_logcat_reader.readLine())!=null){
System.out.println(stringbuffer+"\n");
}
Runtime.getRuntime().exec(command_c);
}
catch(Exception ex){
System.out.println(ex.getMessage());
System.out.println("error in Collector_logcat\n");
}
return ;
}
嘗試這個:
AndroidManifest.xml中
<uses-permission android:name="android.permission.READ_LOGS" />
獲取目錄:
try {
ArrayList<String> commandLine = new ArrayList<String>();
commandLine.add("logcat");
commandLine.add( "-d");
commandLine.add( "-v");
commandLine.add( "time");
commandLine.add( "-s");
commandLine.add( "tag:W");
Process process = Runtime.getRuntime().exec(commandLine.toArray(new String[commandLine.size()]));
BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(process.getInputStream()), 1024);
String line;
while ((line = bufferedReader.readLine()) != null) {
log.append(line);
log.append("\n")
}
} catch (IOException e) {
}
您將獲得以下輸出:
09-08 09:44:42.267 W /標簽(754):message1
09-08 09:44:42.709 W /標簽(754):message2
09-08 09:44:43.187 W /標簽(754):message3
09-08 09:44:45.295 E / tag(754):message8
聲明:本站的技術帖子網頁,遵循CC BY-SA 4.0協議,如果您需要轉載,請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.